(78799) 2002XW93
This object has a more recent orbit available here
Object
| Object | (78799) 2002XW93 |
| Diameter(1) | 565 km |
| Dynamic class(1) | otherTNO |
| Absolute magnitude | 4.99 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 37.507536 ± 0.002642 au |
| Eccentricity | 0.250284070 ± 0.000042080 |
| Inclination | 14.332450487 ± 0.000163440 ° |
| Longitude of ascending node | 46.706012 ± 0.000502 ° |
| Argument of perihelia | 248.479904 ± 0.010123 ° |
| Mean anomaly | 149.012061 ± 0.014230 ° |
| Orbital period | 229.71 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 78799_2002XW93_nima_v3.bsp |
| Date of first observation | 1989-12-17 |
| Date of last observation | 2021-12-01 |
| Number of observations used in the fit | 84 |
| Number of rejected observations | 1 |
| Number of DES observations | 0 |
| Number of MPC observations | 85 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.257 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.360 | 0.166 |
| 2022-07 | 0.380 | 0.162 |
| 2023-01 | 0.418 | 0.179 |
| 2023-07 | 0.438 | 0.174 |
| 2024-01 | 0.480 | 0.191 |
| 2024-07 | 0.500 | 0.185 |
| 2025-01 | 0.546 | 0.204 |
| 2025-07 | 0.566 | 0.196 |
| 2026-01 | 0.618 | 0.215 |
Ephemeris comparison
Difference between NIMAv3 and JPL6 in right ascension (weighted by cos δ) and in declination.
Gray area represents the 1-σ uncertainty of NIMA ephemeris. Green dots represent the DES observations.